Spiegel, M R <br/><br/>
Statistics 

 - 4 Ed. 
 - Irwin  M/s McGraw Hill  2012 
 - A.24p. 
<br/><br/><label>ISBN: </label>978-0-07-015153-6 
<br/><br/><label>Universal Decimal Class. No.: </label>519.5  / SPI/STA